Home / 87,509.40-131,177.70-43,099.80

Finding the Fourth Proportional to 87,509.40, 131,177.70 and 43,099.80

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Solution

The fourth proportional to 87,509.40, 131,177.70 and 43,099.80 is: 64,607.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,509.40 : 131,177.70 = 43,099.80 : x
  2. Step 2: Convert to fraction form
    87,509.40/131,177.70 = 43,099.80/x
  3. Step 3: Cross multiply
    87,509.40x = 131,177.70 × 43,099.80
  4. Step 4: Simplify right side
    87,509.40x = 5,653,732,634.46
  5. Step 5: Solve for x
    x = 5,653,732,634.46/87,509.40
  6. Step 6: Final answer
    x = 64,607.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.